Bottle cap



FIG. 1 is a perspective view of a bottle cap showing our new design;

FIG. 2 is left side elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view of the bottle cap. 

The ornamental design for a bottle cap, as shown. 